Microturbine CHP Application in the Hotel Business

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Microturbine CHP Applicationin the Hotel Business

• DOE Microturbine
• Application Workshop
• Embassy Suites Brea
• January 20, 2004

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Who is PowerHouse Energy

• A Southern California based Distributor and
  Authorized Service Provider of both traditional
  and state-of-the-art energy products
• Its sole mission is to create a win-win solution
  for its customers by reducing energy costs and
  increasing profits through the use of on-site
  generation equipment while never reducing the
  customers security of supply
• PHE offers a variety of options for equipment
  ownership. It will install and service the
  equipment to insure seamless energy generation

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Who is Embassy Suites

• Embassy Suites, Brea is a full service hotel in
  the central retail district
• They have 228 guest rooms with a 400 seat
  restaurant with conference/meeting rooms
• The hotel operates 24 hours X 7 days a week
• They have room heat pumps, central water
  heating, laundry, swimming pool and spa
• PHE partnered with the hotel in an energy service
• The hotel was interested in cost savings

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Pre-CHP Electrical Load
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Post CHP Installation
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Progress Checklist

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Project Schedule
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Organization

• Project Management- Thom McMahon/ Installation,
  Ken Nilsson/Service
• Funded, Owned and Operated by PowerHouse Energy
• Project Plan (Actual Date)
• - Equipment Delivery 12/2002(Same)
• - System Commissioned 3/2003(5/2003)
• - Monitoring Underway 5/2003(5/2003)

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Pictures of Site
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Pictures of Site
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PID As Built
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Installation Improvements

• Improvements this Site
• - Ventilation improvements
• - Metering equipment and pool heat interfaces
  as original installation
• - Selection of installation contractors
• - Poor fit of supplied package exhaust ducting
• Target Improvements-Volume Installations
• - Standard drawing packages
• - Experienced installation contractors
• - Volume material purchases

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Project Cost Table
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Electrical Performance

• Hours of operation to Date 4000 4100
• Average Electrical Performance 26
• 65,000kW/9,200 Therms (LHV) (Dec. 2003)
• Estimated Parasitic Loses in KW- 5kW/hr
• Power Quality Tests Done as required by Southern
  California Edison for Interconnection acceptance.

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Thermal Performance

• Thermal Output used 420,000,Btu/hr
• Average water Delta T across HTX 12oF
• Average flow rate through HTX 70gpm
• CHP Efficiency 55, (26e29t)
• Expected Peak Total System Efficiency 70
• Electrical 28 Thermal 40
• Cooling system N/A

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Emission Performance

• No emission testing has been done to date.
• Emissions appear to be in line with Capstone
  estimates.

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OM Performance

• Availability
• The equipment was unavailable for 612 hours due
  to equipment failure, (2 units including site
  issues). Availability cumulative since start
  94.4. 15 site visits due to equipment, 15 due
  to data acquisition and site issues.
• Cost of OM (less fuel)
• The current estimate of annual OM costs
  excluding hot end replacement in total costs is
  7,000 and 0.8cents/kWh, (2 units).

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Institutional Experience

• Building department and electric utility
  interconnection approvals were required.
• Project management overhead costs associated with
  approvals were approximately 2,500.
• No issues were encountered with either approval
  process.

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Supplier Support

• PHE was the supplier that turn keyed the
  installation. Better understanding of radiant
  heat generation for ventilation of product would
  be helpful, 70,000Btu/hr each w/gas compressor.
• Technical support was very good from Capstone
  with clear documentation.
• PHE is a Capstone Business Partner with a clear
  understanding of OM costs.
• PHE took advantage of Capstones promotional two
  unit package with a 3-year back stop warranty of
  0.008/kWh costs.

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General Experience

• Indoor installations need to account for radiant
  heat with ventilation. Tight space installations
  may not be able to accommodate product
  improvements.
• PHE has gone on to do several other hotel
  installations, honing design and contractor work.
  Current installation costs by PHE are now within
  1-2 of planned or budget costs.
• Suggested development areas, monitoring
  capability of kW, thermal and gas use in unit.
  Reliability of electrical components.